Summary
Suspected acute venous thromboembolism is a frequent and challenging clinical problem.
Phlebography and pulmonary angiography are costly and invasive and, hence, ill-suited
for diagnosing a disease present in only 20% of patients in whom it is suspected.
Novel noninvasive instruments, such as plasma D-dimer measurement, lower limb compression
ultrasonography and helical CT scan are important breakthroughs in the management
of patients with suspected venous thromboembolism. However, none of these instruments
is ideal, and they must be combined in rational and cost-effective diagnostic algorithms
including clinical assessment, which is increasingly standardized. Such strategies
must be validated in management studies, in which patients without venous thromboembolism
are not treated and followed up during 3 months. Suspected massive pulmonary embolism
is a distinct clinical situation requiring a specific diagnostic approach, in which
echocardiography plays a major role. This paper reviews the performance of clinical
evaluation and diagnostic tests for venous thromboembolism, and recently validated
diagnostic schemes.
Key words
Pulmonary embolism - deep vein thrombosis - diagnosis - cost-effectiveness analysis
- outcome studies